Power plants – Pressure fluid source and motor – Pulsator
Patent
1986-07-10
1988-03-08
Garrett, Robert E.
Power plants
Pressure fluid source and motor
Pulsator
91 4R, 91 35, 91397, 91454, 92134, F15B 1518, F15B 2104
Patent
active
047292245
ABSTRACT:
An actuation installation for use under extreme environmental conditions, such as freezing, uses a two-fluid system in which one fluid is impervious to the extreme environment, and the other fluid, such as water, is not. A two-chamber accumulator-separator has a water chamber connected to a water source via control valves and a working fluid chamber connected to a hydraulic actuator port. The other actuator port is connected to a working fluid chamber of a two-chamber accumulator having a sealed air-pressure chamber. When water is admitted to the water chamber, the actuator will move in a first direction further compressing the air in the air pressure chamber. When the water is drained from the water chamber, the accumulator air-pressure moves the actuator in the opposite direction. The actuator is positioned in the extreme environment, with the remainder of the system installed in a protected environment such as underground.
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Garrett Robert E.
Williamson Mark A.
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